This podcast focuses on an excerpt from Transport Security International Magazine that examines the security and economic benefits of risk-based screening, specifically TSA PreCheck, by evaluating the costs and benefits of this approach to security. The authors, Mark Stewart and John Mueller, conclude that the system is highly cost-effective, achieving a 98% reduction in the risk of terrorist attacks while also improving the passenger experience. The authors demonstrate this conclusion through a risk-based framework and cost-benefit analysis, concluding that while PreCheck may not significantly increase security, it does reduce overall screening costs and improves passenger satisfaction. They argue that this system likely enhances security while improving efficiency and benefiting passengers, airports, and airlines.